EGU21-7467
https://doi.org/10.5194/egusphere-egu21-7467
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

A new airborne aerosol sampling system: development, validation, and application in vertical measurement of black carbon mixing state

Shaowen Zhu1,2, Nan Ma1,2, Linhong Xie1,2, Nan Lu1,2, Minglu Li1,2, Shuqing Chen1,2, Jingying Mao1,2, Pengfei Yu1,2, Zhaoze Deng3, Liang Ran3, Hang Su4, and Yafang Cheng4
Shaowen Zhu et al.
  • 1Institute for Environmental and Climate Research (ECI), Jinan University, Guangzhou 511443, China
  • 2Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 511443, China
  • 3Key Laboratory of Middle Atmosphere and Global environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
  • 4Multiphase Chemistry Department, Max Planck Institute for Chemistry, Mainz 55128, Germany

Vertical measurements of aerosol physical-chemical properties have important significance for better addressing the environment and climate effects of atmospheric aerosol. Traditional in-situ vertical observations of those properties are mainly based on aircraft platforms which are costly and restrictive, and not applicable for near-ground (<500 m) measurements. Within the boundary layer, tethered balloon and unmanned aerial vehicle (UAV) are ideal observation platforms but cannot carry heavy online aerosol instruments due to payload limitations. In this study, a new lightweight airborne aerosol sampling system is developed for tethered balloon and UAV platform. The system can collect airborne aerosol samples at up to 12 heights with conductive bags, and the samples can be analyzed later by online instruments such as aerosol mass spectrometer and single particle soot photometer (SP2). During an intensive field campaign conducted in Lhasa in summer of 2020, the new developed system was applied together with a SP2 to determine the vertical profile of refractory black carbon (rBC) mixing state. Preliminary results show that most rBC containing particles are external mixture and the proportion of internally mixed rBC increases with height. The vertical profiles of rBC mixing state are affected by surface emissions, the development of atmospheric boundary layer and meteorological conditions.

How to cite: Zhu, S., Ma, N., Xie, L., Lu, N., Li, M., Chen, S., Mao, J., Yu, P., Deng, Z., Ran, L., Su, H., and Cheng, Y.: A new airborne aerosol sampling system: development, validation, and application in vertical measurement of black carbon mixing state, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-7467, https://doi.org/10.5194/egusphere-egu21-7467, 2021.

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